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https://github.com/git/git
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8c30be9176
Remove full index requirement for `git diff-files`. Refactor the ensure_expanded and ensure_not_expanded functions by introducing a common helper function, ensure_index_state. Add test to ensure the index is no expanded in `git diff-files`. The `p2000` tests demonstrate a ~96% execution time reduction for 'git diff-files' and a ~97% execution time reduction for 'git diff-files' for a file using a sparse index: Test before after ----------------------------------------------------------------------- 2000.94: git diff-files (full-v3) 0.09 0.08 -11.1% 2000.95: git diff-files (full-v4) 0.09 0.09 +0.0% 2000.96: git diff-files (sparse-v3) 0.52 0.02 -96.2% 2000.97: git diff-files (sparse-v4) 0.51 0.02 -96.1% 2000.98: git diff-files -- f2/f4/a (full-v3) 0.06 0.07 +16.7% 2000.99: git diff-files -- f2/f4/a (full-v4) 0.08 0.08 +0.0% 2000.100: git diff-files -- f2/f4/a (sparse-v3) 0.46 0.01 -97.8% 2000.101: git diff-files -- f2/f4/a (sparse-v4) 0.51 0.02 -96.1% Signed-off-by: Shuqi Liang <cheskaqiqi@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
136 lines
3.7 KiB
Bash
Executable file
136 lines
3.7 KiB
Bash
Executable file
#!/bin/sh
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test_description="test performance of Git operations using the index"
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. ./perf-lib.sh
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test_perf_default_repo
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SPARSE_CONE=f2/f4
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test_expect_success 'setup repo and indexes' '
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git reset --hard HEAD &&
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# Remove submodules from the example repo, because our
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# duplication of the entire repo creates an unlikely data shape.
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if git config --file .gitmodules --get-regexp "submodule.*.path" >modules
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then
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git rm $(awk "{print \$2}" modules) &&
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git commit -m "remove submodules" || return 1
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fi &&
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echo bogus >a &&
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cp a b &&
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git add a b &&
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git commit -m "level 0" &&
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BLOB=$(git rev-parse HEAD:a) &&
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OLD_COMMIT=$(git rev-parse HEAD) &&
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OLD_TREE=$(git rev-parse HEAD^{tree}) &&
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for i in $(test_seq 1 3)
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do
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cat >in <<-EOF &&
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100755 blob $BLOB a
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040000 tree $OLD_TREE f1
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040000 tree $OLD_TREE f2
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040000 tree $OLD_TREE f3
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040000 tree $OLD_TREE f4
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EOF
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NEW_TREE=$(git mktree <in) &&
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NEW_COMMIT=$(git commit-tree $NEW_TREE -p $OLD_COMMIT -m "level $i") &&
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OLD_TREE=$NEW_TREE &&
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OLD_COMMIT=$NEW_COMMIT || return 1
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done &&
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git sparse-checkout init --cone &&
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git tag -a v1.0 -m "Final" &&
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git sparse-checkout set $SPARSE_CONE &&
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git checkout -b wide $OLD_COMMIT &&
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for l2 in f1 f2 f3 f4
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do
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echo more bogus >>$SPARSE_CONE/$l2/a &&
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git commit -a -m "edit $SPARSE_CONE/$l2/a" || return 1
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done &&
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git -c core.sparseCheckoutCone=true clone --branch=wide --sparse . full-v3 &&
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(
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cd full-v3 &&
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git sparse-checkout init --cone &&
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git sparse-checkout set $SPARSE_CONE &&
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git config index.version 3 &&
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git update-index --index-version=3 &&
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git checkout HEAD~4
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) &&
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git -c core.sparseCheckoutCone=true clone --branch=wide --sparse . full-v4 &&
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(
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cd full-v4 &&
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git sparse-checkout init --cone &&
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git sparse-checkout set $SPARSE_CONE &&
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git config index.version 4 &&
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git update-index --index-version=4 &&
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git checkout HEAD~4
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) &&
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git -c core.sparseCheckoutCone=true clone --branch=wide --sparse . sparse-v3 &&
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(
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cd sparse-v3 &&
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git sparse-checkout init --cone --sparse-index &&
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git sparse-checkout set $SPARSE_CONE &&
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git config index.version 3 &&
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git update-index --index-version=3 &&
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git checkout HEAD~4
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) &&
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git -c core.sparseCheckoutCone=true clone --branch=wide --sparse . sparse-v4 &&
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(
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cd sparse-v4 &&
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git sparse-checkout init --cone --sparse-index &&
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git sparse-checkout set $SPARSE_CONE &&
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git config index.version 4 &&
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git update-index --index-version=4 &&
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git checkout HEAD~4
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)
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'
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test_perf_on_all () {
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command="$@"
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for repo in full-v3 full-v4 \
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sparse-v3 sparse-v4
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do
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test_perf "$command ($repo)" "
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(
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cd $repo &&
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echo >>$SPARSE_CONE/a &&
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$command
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)
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"
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done
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}
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test_perf_on_all git status
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test_perf_on_all 'git stash && git stash pop'
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test_perf_on_all 'echo >>new && git stash -u && git stash pop'
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test_perf_on_all git add -A
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test_perf_on_all git add .
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test_perf_on_all git commit -a -m A
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test_perf_on_all git checkout -f -
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test_perf_on_all "git sparse-checkout add f2/f3/f1 && git sparse-checkout set $SPARSE_CONE"
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test_perf_on_all git reset
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test_perf_on_all git reset --hard
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test_perf_on_all git reset -- does-not-exist
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test_perf_on_all git diff
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test_perf_on_all git diff --cached
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test_perf_on_all git blame $SPARSE_CONE/a
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test_perf_on_all git blame $SPARSE_CONE/f3/a
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test_perf_on_all git read-tree -mu HEAD
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test_perf_on_all git checkout-index -f --all
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test_perf_on_all git update-index --add --remove $SPARSE_CONE/a
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test_perf_on_all "git rm -f $SPARSE_CONE/a && git checkout HEAD -- $SPARSE_CONE/a"
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test_perf_on_all git grep --cached bogus -- "f2/f1/f1/*"
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test_perf_on_all git write-tree
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test_perf_on_all git describe --dirty
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test_perf_on_all 'echo >>new && git describe --dirty'
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test_perf_on_all git diff-files
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test_perf_on_all git diff-files -- $SPARSE_CONE/a
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test_done
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